SI8663BD-B-IS

Common Mode Transient Immunity (Min):	35kV/µs
Supplier Device Package:	16-SOIC
Package / Case:	16-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C
Voltage - Supply:	2.5 V ~ 5.5 V
Rise / Fall Time (Typ):	2.5ns, 2.5ns
Pulse Width Distortion (Max):	4.5ns
Propagation Delay tpLH / tpHL (Max):	13ns, 13ns
Data Rate:	150Mbps
Series:	Automotive, AEC-Q100
Voltage - Isolation:	5000Vrms
Channel Type:	Unidirectional
Inputs - Side 1/Side 2:	3/3
Number of Channels:	6
Isolated Power:	No
Type:	General Purpose
Technology:	Capacitive Coupling
Part Status:	Active
Packaging:	Tube

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Introduction

Digital isolators, most commonly known as opto-couplers or opto-isolators, are devices designed to transfer signals between two isolated circuits while preventing high voltage and current from transferring through the circuits. This is accomplished by using optical techniques such as transmitting and receiving light signals across a silicon barrier. The SI8663BD-B-IS is an example of a digital isolator typically used for USB data transfer, and supports communication with a speed of up to 3Mbps.

Application Fields

The SI8663BD-B-IS digital isolator is most commonly used for the transfer of USB data types, such as USB audio, video, and data devices. It is a low power and low cost device, making it an ideal solution for applications with limited available power and/or those with strict budgetary constraints. In addition to USB applications, it is also suitable for a variety of other digital isolator applications such as computer peripherals, media players, and home audio systems.

Working Principle

The SI8663BD-B-IS digital isolator works on the principle of optoelectronic signal transmission. Light signals are transmitted from one circuit to another isolated circuit using a silicon barrier. This process prevents any direct electrical connection between the two isolated circuits, while still allowing data to be sent back and forth. The device uses an LED and a phototransistor to transmit and receive the signals, respectively. A voltage source is also required to power the LED and phototransistor, which can typically be provided by the USB port.

Advantages

One major advantage of the SI8663BD-B-IS digital isolator is its low power consumption. This makes it an ideal solution for applications that require low power usage, such as USB audio, video, and data devices. The device also has a high common mode transient immunity, which makes it resistant to electromagnetic interference. Its small size also makes it a practical solution for applications where space is limited, and it has excellent signal noise rejection, thanks to its low capacitive coupling between transmission lines.

Conclusion

The SI8663BD-B-IS digital isolator is a compact, low power device that is suitable for a variety of digital isolation applications. It works on the principle of transmitting and receiving light signals across a silicon barrier in order to keep the two circuits isolated while allowing data to be sent back and forth. The device has a high common mode transient immunity, low power consumption, and excellent signal noise rejection, making it a reliable and economical solution for a variety of digital isolation needs.

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